I have an object with a volumetric material in the scene which renders a bunch of clouds correctly from my camera. I set up a cube to create an environment map by setting up the texture as environment map and giving the cube as Viewport Object. When I hit render (after clearing all environment maps) the new environment map is calculated. All objects appear but the volumetric one.
I'm not using cycles, I'm using Blender Render engine. Also all the objects are contained in the environment map's clipping range.
Does someone have any idea why this happens and how to fix it?